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TLV320AIC3254: SRS TruSurround HD causing sound to mute briefly

Part Number: TLV320AIC3254
Other Parts Discussed in Thread: PCM3070


I am using the SRS TruSurround HD filter block in PurePath Studio and noticed an issue. Every 15-60s the auto will mute for ~1s and then resume. This issue only occurs when using the SRS TruSurround HD plugin. I've even tried using the same filter on the PCM3070 (PurePath Home Audio) with the same configuration and it still has the same issue.

I think there is something wrong with the IntegrationLimit in the SRS TruSurround properties settings, which could be causing the problem. According to the help page, the TruSurround IntegrationLimit can be set between 0.25 and 3.99. However, the properties menu for the filter (see image below) allows me to set the value between 0.0 and 8.0. Which one do I use? The Formula to calculate the IntegrationLimit is "IntegrationLimit=TruBassCompressorControl*32" according to the TruSurround help page. Where do I find the TruBassCompressorControl? I assume this variable is referring to the TruBass value which is ~0.7 (see image below). However, this gets me 22.4 as the IntegrationLimit, which is obviously too high. I got the ~6.2 IntegrationLimit (see image below) from the SRS wowHD help page but I believe this is incorrect for SRS TruSurround. Please help me understand the TruSurround IntegrationLimit formula. Any help is appreciated.



- BCLK = 18.432MHz

- PLL P/R = 1

- PLL J = 6

- DOSR = 144

- NDAC = 2

- MDAC = 8